Through a drip tip you can directly drip ejuice into the
electronic cigarette atomizer or ecig cartomizer.

The drip tip can fit most atomizers or cartomizers which
diameter is 9.2mm(0.36in) or so.

When using any drip tip, you must be very careful with the
e-liquid level inside. You can not drip too much nor too little,
just several drops. Too much e-liquid will lead to a high
possibility of inhaling liquid into your mouth, while too little
will cause dry burning which will greatly shorten atomizer
life.